Shock absorber for the thread-guide rails of parallel hosiery frames



C. HILSCHER March 10, 1925.

- SHOCKABSURBER FOR THE THREAD GUIDE RAILS OF PARALLEL HOSIERY FR AMES Filed Aug. 26, I921 Patented Mar. 10, 1925.

RT. nnsonna, or CHEMNITZ, GERMANY.

srroox ABSORBER roa run THREAD-GUIDE RAILS or PARALLEL Hosrriar FRAMES.

Application and August 26, 1921. seria uo. 495,810;

To all whom it may concern:

Be it known that I, GURT I-Irnsor-rnn, a citizen of the German Republic, residing at Chemnitz, Germany, have invented cer tain new and useful Improvements in Shock Absorbers for the Thread-Guide Rails of Parallel Hosiery Frames, of which the fol lowing is a specification.

This invention relates to a parallel hosiery frame system cotton. In frames of this type the rods on which the thread guides are arranged are arranged to reciprocate in longitudinal direction, a catch being provided for this purpose which is rigidly mounted on a rod. This rod is drawn along by a friction element, the so-called brake, which is fixed on the rod supporting the thread guides, said rod serving as connecting member for the sinker inclines which produce the movement of the sinkers.

The end movement of the rods which carry the thread guides is limited by adjustable abutments with which said rods come in contact. From the sudden interruption of the movement of the rods, the jumping back of the same, and of the thread guides, interruptions of working of the frame occur.

This invention has for its object to do away with the above-mentioned inconvenience by retarding the movement of the rods for the thread guides shortly before the working travel comes to an end so that they move quite slowly against the corresponding abutment.

In order that the invention may be clear- 1y understood, I shall proceed to describe the same with reference to the form of con struction shown by way of example in the accompanying drawing, wherein Fig. 1 shows in elevation one of the frame ends. I

Fig. 2 is an end view of Fig. 1.

Figs. 3 to 8 illustrate the different working positions of the elements for producing the absorption of the shocks.

The thread-guide rails a are reciproeated in the well known manner by a bracket 0, screwed upon the slur bar 6 which ismoved to and fro in longitudinal direction according to the sinker cam not shown in the drawing,drawing along a rod d with the aid of brake springs. At one end of this red the driver for the thread-guide rails is arranged which consists of a guide piece 6, f for a bolt 9 which has a nose for gripping the required threadguide rail 06 to make the same' participate in the reciprocating movement of the slur bar. The guide piece c-f, which is also called change-head, slides loosely upon a rod h and has a hub 2' with an inclined surface at either side. The corresponding inclined surface of the hub i of the guide piece comes.

in contact With a correspondingly inclined end 70 of a lever in (Figs. 1 and 6) shortly' before the end of the path of the thread guide (Fig. 41:), said lever is being pivotally mounted upon the rod h and controlled by a pull spring Z-. The guide piece or changehead must now, in order to continue its travel, push the lever is aside by making the same pivot around its rod h, the resistance 1,528,829 UNITEDSTATES PATENT QFFlCEQ regulated by the spring Z producing thus the desired retardation of the speed of the change-head and consequently of the threadguide rail untiltherod dean slide in the braking bracket 0, wherefrom would result an idle course and the stopping of the change head i and of the thread-guide rail coupled with the same. At this moment awedge piece m fixed upon the slur bar gets nnder the pulley of the lever 70 (Figs. 5 and 6) so that this lever is lifted and the change-head i is released from the pressure exerted by said lever. The braking bracket 0 can now bring the rod 03 and the change head with the thread-guide rail to the stops at or 0 which limit their stroke (Fig. 8) which is effected without shock as the parts to be moved cannot get the full speed owing to the shortness of the travel.

When working in opposite direction the different parts work similarly, and the same elements for producing the absorption of the shock can be arrangedin a similar manner at the other end of the frame.

This double arrangement of these elements can however be avoided if, as shown on Fig. l, a second lever 70 is arranged upon rod h with a hub having an inclined surface projecting in opposite direction to 70, said lever 70 being connected by a rod 79 with the patsaid driver is movably mounted and a slur bar, a spring influenced lever pivotally mounted upon said rod, a projecting hub of said lever having a contact surface inclined in opposition to the inclined surface of the hub of the driver, With Which said driver comes in contact shortly before the end of its travel so that it has to overcome the resistance offered by this obstacle in order to retard the speed of said threadguide rails and a wedge piece on said slur bar for lifting said spring influenced lever.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing Witnesses.

CURT HILSCI'IER. Witnesses: Y

KI'JTE VVEND, PAUL LEIGNER. 

